/* pc width > 1024px */
body {
    background-color: black;
    padding: 0;
    margin: 0;
}
.bor{
    border: 1px solid;
}
/* 导航 star*/
.Nav{
    width: 100%;
    height: 100px;
    position: fixed;
    top: 0;
    font-weight: 700;
    color: #fff;
    transition: all 0.8s;
}
.pcNav{
    width: 80%;
    height: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.384); 
    position: relative; 
}

.pcNavL{
    width: 75%;
    height: 100%;
    position: relative;
}
.pcNavL .pcNavL_item{
    padding: 20px;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor:pointer;
 
}

.pcNavL .line{
    /* display: none; */
    position: absolute;
    bottom: 0;
    left: 0;
    height: 4px;
    background-color: #1C69D4;
    transition: all 0.5s;  
}
.pcNavL .active_line{
    position: absolute;
    bottom: 0;
    left: 0;
    height: 4px;
    background-color: #1C69D4;
    transition: all 0.8s;  
}
.pcNavR{
    width: 25%;
    height: 100%;
}
.pcNavR div{
    width: 33%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor:pointer;
}
/* 选中下拉 */
.down_box{
    position: absolute;
    width: 80%;
    height: 0;
    top: 100px;
    left: 10%;
    background: blanchedalmond;
    transition: all 0.3s;
    overflow: hidden;  
}
.down_box .colse{
    position: absolute;
    top: 10px;
    right: 10px;
}
.down_box .down_box_i{
   width: 100%;
   height: 100%;
   display: none;
}

/* 导航 end*/

/* ipad pro */
@media screen and (max-width: 1024px) {
body {
    background-color: #FF00FF;
}
}
/* ipad */
@media screen and (max-width: 768px) {
body {
    background-color: green;
}
}
/* iphone6 7 8 plus */
@media screen and (max-width: 414px) {
body {
    background-color: blue;
}
}
/* iphoneX */
@media screen and (max-width: 375px) and (-webkit-device-pixel-ratio: 3) {
body {
    background-color: #0FF000;
}
}
/* iphone6 7 8 */
@media screen and (max-width: 375px) and (-webkit-device-pixel-ratio: 2) {
body {
    background-color: #0FF000;
}
}
/* iphone5 */
@media screen and (max-width: 320px) {
body {
    background-color: #0FF000;
}
}